Home / 28,149.05-38,845.38-15,573.89

Finding the Fourth Proportional to 28,149.05, 38,845.38 and 15,573.89

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Solution

The fourth proportional to 28,149.05, 38,845.38 and 15,573.89 is: 21,491.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,149.05 : 38,845.38 = 15,573.89 : x
  2. Step 2: Convert to fraction form
    28,149.05/38,845.38 = 15,573.89/x
  3. Step 3: Cross multiply
    28,149.05x = 38,845.38 × 15,573.89
  4. Step 4: Simplify right side
    28,149.05x = 604,973,480.90
  5. Step 5: Solve for x
    x = 604,973,480.90/28,149.05
  6. Step 6: Final answer
    x = 21,491.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.